Note 6 - Leases and Other Commitments and Contingencies - Leases and Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Jul. 01, 2018	Jun. 30, 2018
Right-of-use assets	$ 3,513
Operating lease obligations	3,521
Remaining cash commitment	4,014
Machinery and Equipment Leases [Member]
Right-of-use assets	31
Operating lease obligations	31
Remaining cash commitment	33
Office Equipment Leases [Member]
Right-of-use assets	28
Operating lease obligations	28
Remaining cash commitment	30
Vitamin Realty LLC [Member]
Right-of-use assets	3,454	$ 3,668
Operating lease obligations	3,462	$ 3,677
Remaining cash commitment	$ 3,951